To analyze (he features of intravenous urography( IVU), differential diagnosis of caliceal diver-ticulum and to summarize the skill of examination.

分室静脉尿路造影（IVU）检查的影像特征、鉴诊断,概括检查技巧。方法:回顾性分30例室的临床资料、超声及造影检查记录。